In [1]:
## 設定
verbose = False
### 言語の割合の均等化
balanced = True
### LDA 用
## トピック数
n_topics = 15 # 30は多過ぎる?
## doc, term の設定
doc_type = 'form'
doc_attr = 'spell'
max_doc_size = 12
##
term_size = 'character'
term_type = '2gram'
## skippy n-gram の結合範囲
max_distance_val = round(max_doc_size * 0.8)
print(f"max_distance_val: {max_distance_val}")
## ngram を包括的にするかどうか
ngram_is_inclusive = True
### DTM 構築
## term の最低頻度
term_min_freq = 2
## 高頻度 term の濫用指標: 大きくし過ぎないように.0.05 は十分に大きい
term_abuse_threshold = 0.05
max_distance_val: 10
In [2]:
import sys, os, random, re, glob
import pandas as pd
import pprint as pp
from functools import reduce
In [3]:
## load data to process
from pathlib import Path
import pprint as pp
wd = Path(".")
##
dirs = [ x for x in wd.iterdir() if x.is_dir() and not x.match(r"plot*") ]
if verbose:
print(f"The following {len(dirs)} directories are potential targets:")
pp.pprint(dirs)
## list up files in target directory
wd = Path(".")
target_dir = "data-words" # can be changed
target_files = sorted(list(wd.glob(f"{target_dir}/*.csv")))
#
print(f"\n{target_dir} contains {len(target_files)} files to process")
pp.pprint(target_files)
data-words contains 9 files to process
[PosixPath('data-words/base-sound-English-r6e-originals.csv'),
PosixPath('data-words/base-sound-German-r1a-original.csv'),
PosixPath('data-words/base-spell-English-r6e-originals.csv'),
PosixPath('data-words/base-spell-Esperanto-r0-orginal.csv'),
PosixPath('data-words/base-spell-French-r0-originals.csv'),
PosixPath('data-words/base-spell-German-r1a-originals.csv'),
PosixPath('data-words/base-spell-Icelandic-r0-original.csv'),
PosixPath('data-words/base-spell-Russian-r0-originals.csv'),
PosixPath('data-words/base-spell-Swahili-r0-orginal.csv')]
In [4]:
import pandas as pd
## データ型の辞書
types = "spell sound freq".split(" ")
type_setting = { t : 0 for t in types }
print(type_setting)
## 言語名の辞書
langs = "english esperanto french german icelandic russian swahili".split(" ")
#langs = "english esperanto french german russian swahili".split(" ")
#langs = "english esperanto french german icelandic swahili".split(" ")
lang_setting = { lang : 0 for lang in langs }
print(lang_setting)
## 辞書と統合
settings = { 'form': None, **type_setting, **lang_setting }
print(settings)
{'spell': 0, 'sound': 0, 'freq': 0}
{'english': 0, 'esperanto': 0, 'french': 0, 'german': 0, 'icelandic': 0, 'russian': 0, 'swahili': 0}
{'form': None, 'spell': 0, 'sound': 0, 'freq': 0, 'english': 0, 'esperanto': 0, 'french': 0, 'german': 0, 'icelandic': 0, 'russian': 0, 'swahili': 0}
In [5]:
vars = list(settings.keys())
print(f"targe var names: {vars}")
d_parts = [ ]
for lang in langs:
local_settings = settings.copy()
print(f"processing: {lang}")
try:
for f in [ f for f in target_files if lang.capitalize() in str(f) ]:
print(f"reading: {f}")
# 言語名の指定
local_settings[lang] = 1
# 型名の指定
for type in vars:
if type in str(f):
local_settings[type] = 1
#
d = pd.read_csv(f, encoding='utf-8', sep = ",", on_bad_lines = 'skip') # Crucially, ...= skip
df = pd.DataFrame(d, columns = vars)
for var in [ var for var in (types + langs) if var != 'freq' ]:
df[var] = local_settings[var]
d_parts.append(df)
except IndexError:
pass
#
if verbose:
d_parts
targe var names: ['form', 'spell', 'sound', 'freq', 'english', 'esperanto', 'french', 'german', 'icelandic', 'russian', 'swahili'] processing: english reading: data-words/base-sound-English-r6e-originals.csv reading: data-words/base-spell-English-r6e-originals.csv processing: esperanto reading: data-words/base-spell-Esperanto-r0-orginal.csv processing: french reading: data-words/base-spell-French-r0-originals.csv processing: german reading: data-words/base-sound-German-r1a-original.csv reading: data-words/base-spell-German-r1a-originals.csv processing: icelandic reading: data-words/base-spell-Icelandic-r0-original.csv processing: russian reading: data-words/base-spell-Russian-r0-originals.csv processing: swahili reading: data-words/base-spell-Swahili-r0-orginal.csv
In [6]:
## データ統合
raw_df = pd.concat(d_parts)
raw_df
Out[6]:
| form | spell | sound | freq | english | esperanto | french | german | icelandic | russian | swahili | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | æbəhəlimə | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | ædmaɪə | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2 | ædmɪʃən | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| 3 | ædvæntɪdʒ | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| 4 | ædvaɪs | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... |
| 703 | zaidi | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 704 | ziara | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 705 | zima | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 706 | ziwa | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 707 | zoezi | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
14323 rows × 11 columns
In [7]:
## 文字数の列を追加
raw_df['size'] = [ len(x) for x in raw_df[doc_type] ]
raw_df
Out[7]:
| form | spell | sound | freq | english | esperanto | french | german | icelandic | russian | swahili | size | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | æbəhəlimə | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 9 |
| 1 | ædmaɪə | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 |
| 2 | ædmɪʃən | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 7 |
| 3 | ædvæntɪdʒ | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 9 |
| 4 | ædvaɪs | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 |
| ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... |
| 703 | zaidi | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
| 704 | ziara | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
| 705 | zima | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
| 706 | ziwa | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
| 707 | zoezi | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
14323 rows × 12 columns
In [8]:
## 言語名= language の列を追加
check = False
language_vals = [ ]
for i, row in raw_df.iterrows():
if check:
print(row)
for j, lang in enumerate(langs):
if check:
print(f"{i}: {lang}")
if row[lang] == 1:
language_vals.append(lang)
if verbose:
print(language_vals)
len(language_vals)
#
raw_df['language'] = language_vals
raw_df
Out[8]:
| form | spell | sound | freq | english | esperanto | french | german | icelandic | russian | swahili | size | language | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | æbəhəlimə | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | english |
| 1 | ædmaɪə | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | english |
| 2 | ædmɪʃən | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | english |
| 3 | ædvæntɪdʒ | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | english |
| 4 | ædvaɪs | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | english |
| ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... |
| 703 | zaidi | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | swahili |
| 704 | ziara | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | swahili |
| 705 | zima | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 | swahili |
| 706 | ziwa | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 | swahili |
| 707 | zoezi | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | swahili |
14323 rows × 13 columns
In [9]:
## 言語の選別
select_languages = True
selected_langs = re.split(r",\s*", "english, french, german, russian")
print(f"selected languages: {selected_langs}")
if select_languages:
df_new = [ ]
for lang in selected_langs:
df_new.append(raw_df[raw_df[lang] == 1])
raw_df = pd.concat(df_new)
#
raw_df
selected languages: ['english', 'french', 'german', 'russian']
Out[9]:
| form | spell | sound | freq | english | esperanto | french | german | icelandic | russian | swahili | size | language | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | æbəhəlimə | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | english |
| 1 | ædmaɪə | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | english |
| 2 | ædmɪʃən | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | english |
| 3 | ædvæntɪdʒ | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | english |
| 4 | ædvaɪs | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | english |
| ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... |
| 993 | нос | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | russian |
| 994 | множественное | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 13 | russian |
| 995 | гнев | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 4 | russian |
| 996 | претензии | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 9 | russian |
| 997 | континент | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 9 | russian |
12065 rows × 13 columns
In [10]:
## 文字数の分布
import numpy as np
import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(1,1,1)
ax.hist(raw_df['size'], bins = 40)
ax.set_xlabel('length of doc')
ax.set_ylabel('freq')
plt.title(f"Length distribution for docs")
fig.show()
/var/folders/s2/lk8hdt6j10j0xyycw1lbjsm40000gn/T/ipykernel_52968/1088473461.py:12: UserWarning: FigureCanvasAgg is non-interactive, and thus cannot be shown fig.show()
In [11]:
## 長さで濾過
print(f"max doc size: {max_doc_size}")
original_size = len(raw_df)
raw_df = raw_df[raw_df['size'] < max_doc_size]
filtered_size = len(raw_df)
print(f"{original_size - filtered_size} cases removed")
max doc size: 12 293 cases removed
In [12]:
## 結果の検査 1
for lang in langs:
print(raw_df[lang].value_counts())
english 1 8249 0 3523 Name: count, dtype: int64 esperanto 0 11772 Name: count, dtype: int64 french 0 10787 1 985 Name: count, dtype: int64 german 0 10207 1 1565 Name: count, dtype: int64 icelandic 0 11772 Name: count, dtype: int64 russian 0 10799 1 973 Name: count, dtype: int64 swahili 0 11772 Name: count, dtype: int64
In [13]:
## 結果の検査 2
for type in types:
print(raw_df[type].value_counts())
spell 1 6883 0 4889 Name: count, dtype: int64 sound 1 9814 0 1958 Name: count, dtype: int64 freq 1 10790 1 966 1 не 1 1 то время как 1 1 северу 1 1 него 1 1 будет 1 1 образом 1 1 мышь 1 Name: count, dtype: int64
In [14]:
## 統合: 割合補正を適用
eng_reduct_factor = 0.25
if balanced:
eng_df = raw_df[raw_df['english'] == 1]
non_eng_df = raw_df[raw_df['english'] == 0]
eng_reduced_df = eng_df.sample(round(len(eng_df) * eng_reduct_factor))
raw_df = pd.concat([eng_reduced_df, non_eng_df])
raw_df
Out[14]:
| form | spell | sound | freq | english | esperanto | french | german | icelandic | russian | swahili | size | language | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1575 | lɪst | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | english |
| 2440 | stænd | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | english |
| 2812 | places | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | english |
| 971 | hoʊm | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | english |
| 1869 | niz | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | english |
| ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... |
| 992 | соль | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 4 | russian |
| 993 | нос | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | russian |
| 995 | гнев | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 4 | russian |
| 996 | претензии | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 9 | russian |
| 997 | континент | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 9 | russian |
5585 rows × 13 columns
In [15]:
## 結果の検査 3
for lang in langs:
print(raw_df[lang].value_counts())
english 0 3523 1 2062 Name: count, dtype: int64 esperanto 0 5585 Name: count, dtype: int64 french 0 4600 1 985 Name: count, dtype: int64 german 0 4020 1 1565 Name: count, dtype: int64 icelandic 0 5585 Name: count, dtype: int64 russian 0 4612 1 973 Name: count, dtype: int64 swahili 0 5585 Name: count, dtype: int64
In [16]:
## 順序のランダマイズ
import sklearn.utils
raw_df = sklearn.utils.shuffle(raw_df)
In [17]:
## データ名の指定
df = raw_df[raw_df[doc_attr] == 1]
print(f"doc_attr: {doc_attr}")
df
doc_attr: spell
Out[17]:
| form | spell | sound | freq | english | esperanto | french | german | icelandic | russian | swahili | size | language | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 290 | часто | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 5 | russian |
| 3204 | risk | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | english |
| 1358 | famous | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | english |
| 1357 | family | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | english |
| 2196 | lived | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | english |
| ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... |
| 723 | sklave | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 6 | german |
| 0 | comme | 1 | 0 | 1.0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 5 | french |
| 552 | caughey | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | english |
| 143 | движение | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 8 | russian |
| 3848 | thumb | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | english |
3765 rows × 13 columns
In [18]:
df[df['english'] == 1]
Out[18]:
| form | spell | sound | freq | english | esperanto | french | german | icelandic | russian | swahili | size | language | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3204 | risk | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | english |
| 1358 | famous | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | english |
| 1357 | family | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | english |
| 2196 | lived | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | english |
| 1347 | faint | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | english |
| ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... |
| 1102 | dog | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | english |
| 2762 | percival | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | english |
| 2681 | ownership | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | english |
| 552 | caughey | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | english |
| 3848 | thumb | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | english |
1030 rows × 13 columns
In [19]:
## ngram の追加
import sys
sys.path.append('..')
import re
import ngrams
import importlib
importlib.reload(ngrams)
import ngrams_skippy
bases = df[doc_type]
## 1gram 列の追加
#sep = r""
#unigrams = [ list(filter(lambda x: len(x) > 0, y)) for y in [ re.split(sep, z) for z in bases ] ]
unigrams = ngrams.gen_unigrams(bases, sep = r"", check = False)
if verbose:
random.sample(unigrams, 5)
#
df['1gram'] = unigrams
#df.loc[:,'1gram'] = unigrams
df
/var/folders/s2/lk8hdt6j10j0xyycw1lbjsm40000gn/T/ipykernel_52968/1248262955.py:21: SettingWithCopyWarning: A value is trying to be set on a copy of a slice from a DataFrame. Try using .loc[row_indexer,col_indexer] = value instead See the caveats in the documentation: https://pandas.pydata.org/pandas-docs/stable/user_guide/indexing.html#returning-a-view-versus-a-copy df['1gram'] = unigrams
Out[19]:
| form | spell | sound | freq | english | esperanto | french | german | icelandic | russian | swahili | size | language | 1gram | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 290 | часто | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 5 | russian | [ч, а, с, т, о] |
| 3204 | risk | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | english | [r, i, s, k] |
| 1358 | famous | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | english | [f, a, m, o, u, s] |
| 1357 | family | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | english | [f, a, m, i, l, y] |
| 2196 | lived | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | english | [l, i, v, e, d] |
| ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... |
| 723 | sklave | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 6 | german | [s, k, l, a, v, e] |
| 0 | comme | 1 | 0 | 1.0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 5 | french | [c, o, m, m, e] |
| 552 | caughey | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | english | [c, a, u, g, h, e, y] |
| 143 | движение | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 8 | russian | [д, в, и, ж, е, н, и, е] |
| 3848 | thumb | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | english | [t, h, u, m, b] |
3765 rows × 14 columns
In [20]:
## 2gram列の追加
bigrams = ngrams.gen_bigrams(bases, sep = r"", check = False)
## 包括的 2gram の作成
if ngram_is_inclusive:
bigrams = [ [*b, *u] for b, u in zip(bigrams, unigrams) ]
if verbose:
print(random.sample(bigrams, 3))
In [21]:
df['2gram'] = bigrams
if verbose:
df
/var/folders/s2/lk8hdt6j10j0xyycw1lbjsm40000gn/T/ipykernel_52968/1480305306.py:1: SettingWithCopyWarning: A value is trying to be set on a copy of a slice from a DataFrame. Try using .loc[row_indexer,col_indexer] = value instead See the caveats in the documentation: https://pandas.pydata.org/pandas-docs/stable/user_guide/indexing.html#returning-a-view-versus-a-copy df['2gram'] = bigrams
In [22]:
## 3gram列の追加
trigrams = ngrams.gen_trigrams(bases, sep = r"", check = False)
## 包括的 3gram の作成
if ngram_is_inclusive:
trigrams = [ [ *t, *b ] for t, b in zip(trigrams, bigrams) ]
if verbose:
print(random.sample(trigrams, 3))
In [23]:
df['3gram'] = trigrams
if verbose:
df
/var/folders/s2/lk8hdt6j10j0xyycw1lbjsm40000gn/T/ipykernel_52968/3715201492.py:1: SettingWithCopyWarning: A value is trying to be set on a copy of a slice from a DataFrame. Try using .loc[row_indexer,col_indexer] = value instead See the caveats in the documentation: https://pandas.pydata.org/pandas-docs/stable/user_guide/indexing.html#returning-a-view-versus-a-copy df['3gram'] = trigrams
In [24]:
## skippy 2grams の生成
import sys
sys.path.append("..") # library path に一つ上の階層を追加
import ngrams_skippy
skippy_2grams = [ ngrams_skippy.generate_skippy_bigrams(x,
missing_mark = '…',
max_distance = max_distance_val, check = False)
for x in df['1gram'] ]
## 包括的 skippy 2-grams の生成
if ngram_is_inclusive:
for i, b2 in enumerate(skippy_2grams):
b2.extend(unigrams[i])
#
if verbose:
random.sample(skippy_2grams, 3)
In [25]:
## skippy 2gram 列の追加
df['skippy2gram'] = skippy_2grams
df
/var/folders/s2/lk8hdt6j10j0xyycw1lbjsm40000gn/T/ipykernel_52968/3263801935.py:3: SettingWithCopyWarning: A value is trying to be set on a copy of a slice from a DataFrame. Try using .loc[row_indexer,col_indexer] = value instead See the caveats in the documentation: https://pandas.pydata.org/pandas-docs/stable/user_guide/indexing.html#returning-a-view-versus-a-copy df['skippy2gram'] = skippy_2grams
Out[25]:
| form | spell | sound | freq | english | esperanto | french | german | icelandic | russian | swahili | size | language | 1gram | 2gram | 3gram | skippy2gram | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 290 | часто | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 5 | russian | [ч, а, с, т, о] | [ча, ас, ст, то, ч, а, с, т, о] | [час, аст, сто, ча, ас, ст, то, ч, а, с, т, о] | [ча, ч…с, ч…т, ч…о, ас, а…т, а…о, ст, с…о, то,... |
| 3204 | risk | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | english | [r, i, s, k] | [ri, is, sk, r, i, s, k] | [ris, isk, ri, is, sk, r, i, s, k] | [ri, r…s, r…k, is, i…k, sk, r, i, s, k] |
| 1358 | famous | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | english | [f, a, m, o, u, s] | [fa, am, mo, ou, us, f, a, m, o, u, s] | [fam, amo, mou, ous, fa, am, mo, ou, us, f, a,... | [fa, f…m, f…o, f…u, f…s, am, a…o, a…u, a…s, mo... |
| 1357 | family | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | english | [f, a, m, i, l, y] | [fa, am, mi, il, ly, f, a, m, i, l, y] | [fam, ami, mil, ily, fa, am, mi, il, ly, f, a,... | [fa, f…m, f…i, f…l, f…y, am, a…i, a…l, a…y, mi... |
| 2196 | lived | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | english | [l, i, v, e, d] | [li, iv, ve, ed, l, i, v, e, d] | [liv, ive, ved, li, iv, ve, ed, l, i, v, e, d] | [li, l…v, l…e, l…d, iv, i…e, i…d, ve, v…d, ed,... |
| ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... |
| 723 | sklave | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 6 | german | [s, k, l, a, v, e] | [sk, kl, la, av, ve, s, k, l, a, v, e] | [skl, kla, lav, ave, sk, kl, la, av, ve, s, k,... | [sk, s…l, s…a, s…v, s…e, kl, k…a, k…v, k…e, la... |
| 0 | comme | 1 | 0 | 1.0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 5 | french | [c, o, m, m, e] | [co, om, mm, me, c, o, m, m, e] | [com, omm, mme, co, om, mm, me, c, o, m, m, e] | [co, c…m, c…e, om, o…m, o…e, mm, m…e, me, c, o... |
| 552 | caughey | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | english | [c, a, u, g, h, e, y] | [ca, au, ug, gh, he, ey, c, a, u, g, h, e, y] | [cau, aug, ugh, ghe, hey, ca, au, ug, gh, he, ... | [ca, c…u, c…g, c…h, c…e, c…y, au, a…g, a…h, a…... |
| 143 | движение | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 8 | russian | [д, в, и, ж, е, н, и, е] | [дв, ви, иж, же, ен, ни, ие, д, в, и, ж, е, н,... | [дви, виж, иже, жен, ени, ние, дв, ви, иж, же,... | [дв, д…и, д…ж, д…е, д…н, ви, в…ж, в…е, в…н, в…... |
| 3848 | thumb | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | english | [t, h, u, m, b] | [th, hu, um, mb, t, h, u, m, b] | [thu, hum, umb, th, hu, um, mb, t, h, u, m, b] | [th, t…u, t…m, t…b, hu, h…m, h…b, um, u…b, mb,... |
3765 rows × 17 columns
In [26]:
## skippy 3grams の生成
import sys
sys.path.append("..") # library path に一つ上の階層を追加
import ngrams_skippy
skippy_3grams = [ ngrams_skippy.generate_skippy_trigrams(x,
missing_mark = '…',
max_distance = max_distance_val, check = False)
for x in df['1gram'] ]
## 包括的 skippy 3-grams の生成
if ngram_is_inclusive:
for i, t2 in enumerate(skippy_3grams):
t2.extend(skippy_2grams[i])
#
if verbose:
random.sample(skippy_3grams, 3)
In [27]:
## skippy 3gram 列の追加
df['skippy3gram'] = skippy_3grams
df
/var/folders/s2/lk8hdt6j10j0xyycw1lbjsm40000gn/T/ipykernel_52968/1159231133.py:3: SettingWithCopyWarning: A value is trying to be set on a copy of a slice from a DataFrame. Try using .loc[row_indexer,col_indexer] = value instead See the caveats in the documentation: https://pandas.pydata.org/pandas-docs/stable/user_guide/indexing.html#returning-a-view-versus-a-copy df['skippy3gram'] = skippy_3grams
Out[27]:
| form | spell | sound | freq | english | esperanto | french | german | icelandic | russian | swahili | size | language | 1gram | 2gram | 3gram | skippy2gram | skippy3gram | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 290 | часто | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 5 | russian | [ч, а, с, т, о] | [ча, ас, ст, то, ч, а, с, т, о] | [час, аст, сто, ча, ас, ст, то, ч, а, с, т, о] | [ча, ч…с, ч…т, ч…о, ас, а…т, а…о, ст, с…о, то,... | [час, ча…т, ча…о, ч…ст, ч…с…о, ч…то, аст, ас…о... |
| 3204 | risk | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | english | [r, i, s, k] | [ri, is, sk, r, i, s, k] | [ris, isk, ri, is, sk, r, i, s, k] | [ri, r…s, r…k, is, i…k, sk, r, i, s, k] | [ris, ri…k, r…sk, isk, ri, r…s, r…k, is, i…k, ... |
| 1358 | famous | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | english | [f, a, m, o, u, s] | [fa, am, mo, ou, us, f, a, m, o, u, s] | [fam, amo, mou, ous, fa, am, mo, ou, us, f, a,... | [fa, f…m, f…o, f…u, f…s, am, a…o, a…u, a…s, mo... | [fam, fa…o, fa…u, fa…s, f…mo, f…m…u, f…m…s, f…... |
| 1357 | family | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | english | [f, a, m, i, l, y] | [fa, am, mi, il, ly, f, a, m, i, l, y] | [fam, ami, mil, ily, fa, am, mi, il, ly, f, a,... | [fa, f…m, f…i, f…l, f…y, am, a…i, a…l, a…y, mi... | [fam, fa…i, fa…l, fa…y, f…mi, f…m…l, f…m…y, f…... |
| 2196 | lived | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | english | [l, i, v, e, d] | [li, iv, ve, ed, l, i, v, e, d] | [liv, ive, ved, li, iv, ve, ed, l, i, v, e, d] | [li, l…v, l…e, l…d, iv, i…e, i…d, ve, v…d, ed,... | [liv, li…e, li…d, l…ve, l…v…d, l…ed, ive, iv…d... |
| ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... |
| 723 | sklave | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 6 | german | [s, k, l, a, v, e] | [sk, kl, la, av, ve, s, k, l, a, v, e] | [skl, kla, lav, ave, sk, kl, la, av, ve, s, k,... | [sk, s…l, s…a, s…v, s…e, kl, k…a, k…v, k…e, la... | [skl, sk…a, sk…v, sk…e, s…la, s…l…v, s…l…e, s…... |
| 0 | comme | 1 | 0 | 1.0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 5 | french | [c, o, m, m, e] | [co, om, mm, me, c, o, m, m, e] | [com, omm, mme, co, om, mm, me, c, o, m, m, e] | [co, c…m, c…e, om, o…m, o…e, mm, m…e, me, c, o... | [com, co…m, co…e, c…mm, c…m…e, c…me, omm, om…e... |
| 552 | caughey | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | english | [c, a, u, g, h, e, y] | [ca, au, ug, gh, he, ey, c, a, u, g, h, e, y] | [cau, aug, ugh, ghe, hey, ca, au, ug, gh, he, ... | [ca, c…u, c…g, c…h, c…e, c…y, au, a…g, a…h, a…... | [cau, ca…g, ca…h, ca…e, ca…y, c…ug, c…u…h, c…u... |
| 143 | движение | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 8 | russian | [д, в, и, ж, е, н, и, е] | [дв, ви, иж, же, ен, ни, ие, д, в, и, ж, е, н,... | [дви, виж, иже, жен, ени, ние, дв, ви, иж, же,... | [дв, д…и, д…ж, д…е, д…н, ви, в…ж, в…е, в…н, в…... | [дви, дв…ж, дв…е, дв…н, дв…и, д…иж, д…и…е, д…и... |
| 3848 | thumb | 1 | 1 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | english | [t, h, u, m, b] | [th, hu, um, mb, t, h, u, m, b] | [thu, hum, umb, th, hu, um, mb, t, h, u, m, b] | [th, t…u, t…m, t…b, hu, h…m, h…b, um, u…b, mb,... | [thu, th…m, th…b, t…um, t…u…b, t…mb, hum, hu…b... |
3765 rows × 18 columns
In [28]:
## LDA 構築の基になる document-term matrix (dtm) を構築
from gensim.corpora.dictionary import Dictionary
bots = df[term_type]
diction = Dictionary(bots)
## 結果の確認
print(diction)
Dictionary<1189 unique tokens: ['а', 'ас', 'о', 'с', 'ст']...>
In [29]:
## diction の濾過
import copy
diction_copy = copy.deepcopy(diction)
## filter適用: 実は諸刃の刃で,token数が少ない時には適用しない方が良い
print(f"min freq filter: {term_min_freq}")
print(f"abuse filter: {term_abuse_threshold}")
apply_filter = True
if apply_filter:
diction_copy.filter_extremes(no_below = term_min_freq, no_above = term_abuse_threshold)
## check
print(diction_copy)
min freq filter: 2 abuse filter: 0.05 Dictionary<862 unique tokens: ['ас', 'ст', 'то', 'ч', 'ча']...>
In [30]:
## Corpus (gensim の用語では corpus) の構築
corpus = [ diction.doc2bow(bot) for bot in bots ]
## check
check = True
if verbose:
sample_n = 5
print(random.sample(corpus, sample_n))
#
print(f"Number of documents: {len(corpus)}")
Number of documents: 3765
In [31]:
## LDA モデルの構築
from gensim.models import LdaModel
#from tqdm import tqdm
## LDAモデル
print(f"Building LDA model with n_topics: {n_topics}")
lda = LdaModel(corpus, id2word = diction, num_topics = n_topics, alpha = 0.01)
#
print(lda) # print(..)しないと中身が見れない
Building LDA model with n_topics: 15 LdaModel<num_terms=1189, num_topics=15, decay=0.5, chunksize=2000>
In [32]:
%%capture --no-display
## LDA のtopic ごとに,関連度の高い term を表示
import pandas as pd
n_terms = 20 # topic ごとに表示する term 数の指定
topic_dfs = [ ]
for topic in range(n_topics):
terms = [ ]
for i, prob in lda.get_topic_terms(topic, topn = n_terms):
terms.append(diction.id2token[ int(i) ])
#
topic_dfs.append(pd.DataFrame([terms], index = [ f'topic {topic+1}' ]))
#
topic_term_df = pd.concat(topic_dfs)
## Table で表示
topic_term_df.T
Out[32]:
| topic 1 | topic 2 | topic 3 | topic 4 | topic 5 | topic 6 | topic 7 | topic 8 | topic 9 | topic 10 | topic 11 | topic 12 | topic 13 | topic 14 | topic 15 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | r | о | a | o | о | h | i | e | l | l | e | e | e | а | е |
| 1 | o | т | t | t | е | c | e | s | o | е | n | c | r | о | т |
| 2 | e | л | u | a | н | ch | n | i | e | о | g | o | a | т | с |
| 3 | t | и | n | u | а | e | t | r | s | i | b | r | s | и | н |
| 4 | or | р | c | r | р | r | a | n | i | л | i | е | n | р | о |
| 5 | f | t | e | s | г | a | r | t | a | к | en | p | er | ь | и |
| 6 | b | я | s | e | и | t | d | u | r | e | r | h | l | к | ь |
| 7 | i | от | an | i | в | sc | m | o | t | il | c | л | t | д | м |
| 8 | d | ь | at | ou | д | o | u | p | le | le | s | n | p | с | р |
| 9 | u | ро | l | ut | м | щ | o | re | n | р | ge | l | g | н | п |
| 10 | rd | в | b | c | з | l | s | l | m | н | h | a | c | ть | ст |
| 11 | er | ю | о | h | го | е | l | a | u | с | ch | i | o | п | й |
| 12 | n | a | p | to | й | ha | h | c | b | c | к | t | en | в | ы |
| 13 | re | с | un | n | e | s | f | en | h | ло | eb | k | h | у | а |
| 14 | w | к | i | re | ра | m | in | m | d | ll | u | о | v | л | л |
| 15 | c | а | w | l | п | he | g | se | is | t | a | в | d | ат | ый |
| 16 | s | ть | f | au | к | n | c | in | al | ол | be | oc | i | з | ть |
| 17 | л | д | y | m | но | щи | en | d | y | и | he | д | u | ра | я |
| 18 | h | s | h | so | ой | и | te | g | la | ко | о | b | se | ч | ме |
| 19 | br | сл | r | ai | во | î | ie | er | li | ic | ri | re | ve | ка | ес |
In [33]:
%%capture --no-display
## pyLDAvis を使った結果 LDA の可視化: 階層クラスタリングより詳しい
import pyLDAvis
#installed_version = sys.version
installed_version = pyLDAvis.__version__
print(f"installed_version: {installed_version}")
if float(installed_version[:3]) > 3.1:
import pyLDAvis.gensim_models as gensimvis
else:
import pyLDAvis.gensim as gensimvis
#
pyLDAvis.enable_notebook()
#
lda_used = lda
corpus_used = corpus
diction_used = diction
## 実行パラメター
use_tSNE = False
if use_tSNE:
vis = gensimvis.prepare(lda_used, corpus_used, diction_used, mds = 'tsne',
n_jobs = 1, sort_topics = False)
else:
vis = gensimvis.prepare(lda_used, corpus_used, diction_used,
n_jobs = 1, sort_topics = False)
#
pyLDAvis.display(vis)
## 結果について
## topic を表わす円の重なりが多いならn_topics が多過ぎる可能性がある.
## ただし2Dで重なっていても,3Dなら重なっていない可能性もある
Out[33]:
In [34]:
## LDA がD に対して生成した topics の弁別性を確認
## 得られたtopics を確認
topic_dist = lda.get_topics()
if verbose:
topic_dist
In [35]:
## 検査 1: topic ごとに分布の和を取る
print(topic_dist.sum(axis = 1))
[1.0000001 1. 1.0000002 1. 1. 1. 1.0000001 1. 0.9999999 1. 1. 1.0000001 1.0000001 1.0000001 0.99999994]
In [36]:
## 検査 2: 総和を求める: n_topics にほぼ等しいなら正常
print(topic_dist.sum())
15.0
In [37]:
## term エンコード値の分布を確認
import matplotlib.pyplot as plt
plt.figure(figsize = (4,5))
sampling_rate = 0.3
df_size = len(topic_dist)
sample_n = round(df_size * sampling_rate)
topic_sampled = random.sample(list(topic_dist), sample_n)
T = sorted([ sorted(x, reverse = True) for x in topic_sampled ])
plt.plot(T, range(len(T)))
plt.title("Distribution of sorted values ({sample_n} samples) for topic/term encoding")
plt.show()
In [38]:
## tSNE を使った topics のグループ化 (3D)
from sklearn.manifold import TSNE
import numpy as np
## tSNE のパラメターを設定
## n_components は射影先の空間の次元: n_components = 3 なら3次元空間に射影
## perplexity は結合の強さを表わす指数で,値に拠って結果が代わるので,色々な値を試すと良い
#perplexity_val = 10 # 大き過ぎると良くない
top_perplexity_reduct_rate = 0.3
perplexity_val = round(len(topic_dist) * top_perplexity_reduct_rate)
topic_tSNE_3d = TSNE(n_components = 3, random_state = 0, perplexity = perplexity_val, n_iter = 1000)
## データに適用
top_tSNE_3d_fitted = topic_tSNE_3d.fit_transform(np.array(topic_dist))
In [39]:
## Plotlyを使って tSNE の結果の可視化 (3D)
#import plotly.express as pex
import plotly.graph_objects as go
import numpy as np
top_tSNE = top_tSNE_3d_fitted
fig = go.Figure(data = [go.Scatter3d(x = top_tSNE[:,0], y = top_tSNE[:,1], z = top_tSNE[:,2],
mode = 'markers')])
## 3D 散布図にラベルを追加する処理は未実装
title_val = f"3D tSNE view for LDA (#topics: {n_topics}, doc: {doc_type}, term: {term_size} {term_type})"
fig.update_layout(autosize = False,
width = 600, height = 600, title = title_val)
fig.show()
In [40]:
## 構築した LDA モデルを使って文(書)を分類する
## .get_document_topics(..) は minimu_probability = 0としないと
## topic の値が小さい場合に値を返さないので,
## パラメター
ntopics = n_topics # LDA の構築の最に指定した値を使う
check = False
encoding = [ ]
for i, row in df.iterrows():
if check:
print(f"row: {row}")
doc = row[doc_type]
bot = row[term_type]
## get_document_topics(..) では minimu_probability = 0 としないと
## 値が十分に大きな topics に関してだけ値が取れる
enc = lda.get_document_topics(diction.doc2bow(bot), minimum_probability = 0)
if check:
print(f"enc: {enc}")
encoding.append(enc)
#
len(encoding)
Out[40]:
3765
In [41]:
## enc 列の追加
#df['enc'] = np.array(encoding) # This flattens arrays
#df['enc'] = list(encoding) # ineffective
df['enc'] = [ list(map(lambda x: x[1], y)) for y in encoding ]
if verbose:
df['enc']
/var/folders/s2/lk8hdt6j10j0xyycw1lbjsm40000gn/T/ipykernel_52968/1047258704.py:5: SettingWithCopyWarning: A value is trying to be set on a copy of a slice from a DataFrame. Try using .loc[row_indexer,col_indexer] = value instead See the caveats in the documentation: https://pandas.pydata.org/pandas-docs/stable/user_guide/indexing.html#returning-a-view-versus-a-copy
In [42]:
## エンコーディングのstd の分布を見る
from scipy.stats import tstd
from matplotlib import pyplot as plt
plt.figure(figsize = (6,4))
std_data = [ tstd(x) for x in df['enc'] ]
plt.hist(std_data)
plt.title("Distribution of standard deviations")
plt.show()
In [43]:
## doc のエンコーディング
## 一様分布の事例を除外
from scipy.stats import tstd # standard deviation の計算用
print(f"{len(df)} instances before filtering")
check = False
doc_enc = df['enc']
max_std = max([ tstd(x) for x in doc_enc])
if check: print(f"std max: {max_std}")
min_std = min([ tstd(x) for x in doc_enc])
if check: print(f"std min: {min_std}")
first_min_std = list(sorted(set([ tstd(x) for x in doc_enc])))[-0]
print(f"std 1st min: {first_min_std}")
second_min_std = list(sorted(set([ tstd(x) for x in doc_enc])))[-1]
print(f"std 2nd min: {second_min_std}")
3765 instances before filtering std 1st min: 0.0 std 2nd min: 0.25636767221964024
In [44]:
## df_filtered の定義
## 閾値は2番目に小さい値より小さく最小値よりは大きな値であるべき
std_threshold = second_min_std / 4 # 穏健な値を得るために4で割った
print(f"std_threshold: {std_threshold}")
## Rっぽい次のコードは通らない
#df_filtered = df[ df['encoding'] > std_threshold ]
## 通るのは次のコード: Creating a list of True/False and apply it to DataFrame
std_tested = [ False if tstd(x) < std_threshold else True for x in df['enc'] ]
df_filtered = df[ std_tested ]
#
print(f"{len(df_filtered)} instances after filtering ({len(df) - len(df_filtered)} instances removed)")
std_threshold: 0.06409191805491006 3764 instances after filtering (1 instances removed)
In [45]:
## doc エンコード値の分布を確認
sample_n = 50
E = sorted([ sorted(x, reverse = True) for x in df_filtered['enc'].sample(sample_n) ])
plt.figure(figsize = (5,5))
plt.plot(E, range(len(E)))
plt.title(f"Distribution of sorted encoding values for sampled {sample_n} docs")
plt.show()
In [46]:
len(df_filtered['language'])
Out[46]:
3764
In [47]:
## tSNE 用の事例サンプリング = tSNE_df の定義
tSNE_sampling = True
tSNE_sampling_rate = 0.33
if tSNE_sampling:
tSNE_df_original = df_filtered.copy()
sample_n = round(len(tSNE_df_original) * tSNE_sampling_rate)
tSNE_df = tSNE_df_original.sample(sample_n)
print(f"tSNE_df has {len(tSNE_df)} rows after sampling")
else:
tSNE_df = df_filtered
tSNE_df has 1242 rows after sampling
In [48]:
tSNE_df.columns
Out[48]:
Index(['form', 'spell', 'sound', 'freq', 'english', 'esperanto', 'french',
'german', 'icelandic', 'russian', 'swahili', 'size', 'language',
'1gram', '2gram', '3gram', 'skippy2gram', 'skippy3gram', 'enc'],
dtype='object')
In [49]:
## tSNE の結果の可視化: Plotly を使った 3D 描画
import numpy as np
from sklearn.manifold import TSNE as tSNE
import plotly.express as pex
import plotly.graph_objects as go
import matplotlib.pyplot as plt
## tSNE のパラメターを設定
perplexity_max_val = round(len(tSNE_df)/4)
for perplexity_val in range(5, perplexity_max_val, 30):
## tSNE 事例の生成
tSNE_3d_varied = tSNE(n_components = 3, random_state = 0, perplexity = perplexity_val, n_iter = 1000)
## データに適用
doc_enc = np.array(list(tSNE_df['enc']))
doc_tSNE_3d_varied = tSNE_3d_varied.fit_transform(doc_enc)
T = zip(doc_tSNE_3d_varied[:,0], doc_tSNE_3d_varied[:,1], doc_tSNE_3d_varied[:,2],
tSNE_df['language']) # zip(..)が必要
df = pd.DataFrame(T, columns = ['D1', 'D2', 'D3', 'language'])
## 作図
fig = go.Figure()
for lang in np.unique(df['language']):
part = df[df['language'] == lang]
fig.add_trace(
go.Scatter3d(
x = part['D1'], y = part['D2'], z = part['D3'],
name = lang, mode = 'markers', marker = dict(size = 6),
showlegend = True
)
)
title_val = f"tSNE 3D map (ppl: {perplexity_val}) of {doc_attr}s encoded by LDA ({n_topics} topics; term: {term_type})"
fig.update_layout(title = dict(text = title_val),
autosize = False, width = 600, height = 600,)
fig.show()
In [50]:
## 階層クラスタリングのための事例のサンプリング
hc_sampling_rate = 0.1 # 大きくし過ぎると図が見にくい
df_size = len(tSNE_df)
hc_sample_n = round(df_size * hc_sampling_rate)
hc_df = tSNE_df.sample(hc_sample_n)
##
print(f"{hc_sample_n} rows are sampled")
hc_df['language'].value_counts()
124 rows are sampled
Out[50]:
language french 38 english 35 russian 35 german 16 Name: count, dtype: int64
In [51]:
## doc 階層クラスタリングの実行
import numpy as np
import plotly
import matplotlib.pyplot as plt
from scipy.cluster.hierarchy import dendrogram, linkage
## 距離行列の生成
Enc = list(hc_df['enc'])
linkage = linkage(Enc, method = 'ward', metric = 'euclidean')
## 描画サイズの指定
plt.figure(figsize = (5, round(len(hc_df) * 0.15))) # This needs to be run here, before dendrogram construction.
## 事例ラベルの生成
label_vals = [ x[:max_doc_size] for x in list(hc_df[doc_type]) ] # truncate doc keys
## 樹状分岐図の作成
dendrogram(linkage, orientation = 'left', labels = label_vals, leaf_font_size = 7)
## 描画
plt.title(f"Hierarchical clustering of (sampled) {len(hc_df)} (= {100 * hc_sampling_rate}%) {doc_attr}s as docs\n \
encoded via LDA ({n_topics} topics) with {term_type} as terms")
## ラベルに language に対応する色を付ける
lang_colors = { lang_name : i for i, lang_name in enumerate(np.unique(hc_df['language'])) }
ax = plt.gca()
for ticker in ax.get_ymajorticklabels():
form = ticker.get_text()
row = hc_df.loc[hc_df[doc_type] == form]
#lang = row['language']
lang = row['language'].to_string().split()[-1] # trick
try:
lang_id = lang_colors[lang]
except (TypeError, KeyError):
print(f"color encoding error at: {lang}")
#
ticker.set_color(plotly.colors.qualitative.Plotly[lang_id]) # id の基数調整
#
plt.show()
In [52]:
## tSNE の結果の可視化 (2D)
#import seaborn as sns
import numpy as np
import plotly
import plotly.express as pex
import matplotlib.pyplot as plt
from adjustText import adjust_text
## tSNE 事例の生成
perplexity_selected = 250
tSNE_3d = tSNE(n_components = 3, random_state = 0, perplexity = perplexity_selected, n_iter = 1000)
## データに適用
doc_enc = np.array(list(tSNE_df['enc']))
doc_tSNE_3d = tSNE_3d.fit_transform(doc_enc)
T = zip(doc_tSNE_3d[:,0], doc_tSNE_3d[:,1], doc_tSNE_3d[:,2],
tSNE_df['language']) # zip(..)が必要
df = pd.DataFrame(T, columns = ['D1', 'D2', 'D3', 'language'])
## 描画
plt.figure(figsize = (5, 5))
plt.set_colors = pex.colors.qualitative.Plotly
for r in [ np.roll([0,1,2], -i) for i in range(0,3) ]:
if check:
print(r)
X, Y = df.iloc[:,r[0]], df.iloc[:,r[1]]
gmax = max(X.max(), Y.max())
gmin = min(X.min(), Y.min())
plt.xlim(gmin, gmax)
plt.ylim(gmin, gmax)
colormap = pex.colors.qualitative.Plotly
lang_list = list(np.unique(tSNE_df['language']))
cmapped = [ colormap[lang_list.index(lang)] for lang in df['language'] ]
scatter = plt.scatter(X, Y, s = 40, c = cmapped, edgecolors = 'w')
## 文字を表示する事例のサンプリング
lab_sampling_rate = 0.02
lab_sample_n = round(len(tSNE_df) * lab_sampling_rate)
sampled_keys = [ doc[:max_doc_size] for doc in random.sample(list(tSNE_df[doc_type]), lab_sample_n) ]
## labels の生成
texts = [ ]
for x, y, s in zip(X, Y, sampled_keys):
texts.append(plt.text(x, y, s, size = 9, color = 'blue'))
## label に repel を追加: adjustText package の導入が必要
adjust_text(texts, force_points = 0.2, force_text = 0.2,
expand_points = (1, 1), expand_text = (1, 1),
arrowprops = dict(arrowstyle = "-", color = 'black', lw = 0.5))
#
plt.title(f"tSNE (ppl: {perplexity_selected}) 2D map of {len(tSNE_df)} {doc_attr}s via LDA ({term_type}; {n_topics} topics)")
#plt.legend(np.unique(cmapped))
plt.show()
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